Sure, you can play often and hard and still lose. It’s even possible to play once, not do much, and win.
The probability of those outcome are vastly different.
Don’t play = 0% chance of winning.
Play once and don’t try hard = .000001% chance of winning.
Play hard and often = 15% chance of winning, with a 80% chance of coming in the top 10%.
*figures are made up, but logically realistic.